Key Concepts: rise of piano, standardisation of the orchestra, sonata form, chamber music, symphony, balance, enlightenment, absolute music, concerto, homophonic.

主要音乐概念：钢琴地位的提升，管弦乐队的标准编制，奏鸣曲式，室内乐，交响乐，音乐平衡感，音乐教化作用，纯音乐，协奏曲，主调音乐。

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Due to the unique ability of levitating a charged char particle in a chamber, the electrodynamic balance technique can be used to probe the combustion process of single char particle in situ.

利用电动态平衡技术，将单个带电煤颗粒悬浮在样品池中，可以实现煤颗粒燃烧过程的原位微观研究。

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Secondly, a simplified ship lift model is founded including the balance weight subsystem, the lift subsystem and the ship-chamber subsystem.

其次，建立了一个含平衡重子系统、主提升子系统和船厢子系统的简化升船机模型。

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To have a second chamber also directly elected would disturb the balance of power and create near anarchy, like the awful situation in America where the Senate and the House of Representatives are forever at war.

ECONOMIST: Letters

Ms. ROBIN CONRAD (General Counsel, U.S. Chamber of Commerce): I think the balance and the fairness occurred a long time ago.

NPR: High Court Sets Limits On Sex Discrimination Suits

Even its current, diminished performance, repeated at the general election that has to be held by next spring, would give M5S about 80 of the seats in the 630-seat lower house Chamber of Deputies and, perhaps, the balance of power.

ECONOMIST: Italian politics: A waning star? | The